<template>
  <div class="app">
    <h3>我是App组件</h3>
    <Child></Child>
  </div>
</template>

<script>
  import Child from './components/Child.vue'
  export default {
    name:'App',
    components:{
      Child
    },
    
  }
</script>

<style>
  .app {
    background-color: gray;
    padding: 10px;
  }
</style>